the video shows a silver nissan altima pulling up in broad daylight. a woman gets out as you will see in just a second, grabs the mail and then another victim says she had a mortgage check stolen which was copied and turned into fake payments. >>> deputies say two men may be behind a 7-eleven heist out of half moon bay. the take, more than $7,500. surveillance video caught them entering the store on monday. according to the deputies, one man asked the clerk about lottery tickets. the other suspect went into an office and grabbed a bag of cash. store workers didn't realize they had been robbed until a few hours later. $7,500 is a lot of money. >>> it's the second annual bay area science festival and our mad scientist is taking part. you were building a plane earlier. >> reporter: i am building a plane. we'll see if it flies in a few minutes. good question if it will fly. but had it's neat down here at the tech museum of innovation. if you haven't been here it's a great place for the family. it's a neat place where you can do a lot of hands on experiment